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SECTION 9—GLOSSARY
This section provides explanations for acronyms and definitions of terms used in this
manual.
ADU: (Asynchronous Data Unit)
ARS: (Automatic Route Selection)
ASCII: (American Standard Code for Information Exchange)
Administer
To access and change the parameters associated with the services or features of the
system.
Analog Data Endpoint
Data endpoints with customer provided built-in or stand-alone modems. They do not
require the use of data modules (asynchronous data units) and are addressed similar
to any voice terminal by PDC. These end-points connect to tip/ring type circuit pack
ports.
Analog Voice Terminals
Voice terminals served by a single-line tip and ring circuit (2500 series and 7101A
voice terminals or industry standard Dual Tone Multifrequency equivalent).
Appearance
See Call Appearance.
Asynchronous Data Transmission
A scheme for transmitting data where each character is preceded by a start bit and
followed by a stop bit, thus permitting data elements to occur at irregular intervals.
This type transmission is advantageous when transmission is not regular (characters
typed at a keyboard).
Asynchronous Data Unit (ADU)
A data communications equipment (DCE) type device that allows direct connection
between RS-232C equipment and the digital switch via ports on the Data Line Circuit
Pack (TN-726).
Attendant
The operator of the attendant console.
9-1